Even if you have inside information from one event (which is probably illegal anyway), the casino will eventually recover if you keep gambling. And that's assuming you win in that insider's bet, which you might also lose.
If that insider information comes from someone reliable, so reliable that you’d be willing to mortgage your house for it then take that opportunity. One big bet could change your life and make you a profitable gambler.
But when we talk about living off gambling, that means doing it consistently. And the thing is, insider info isn’t something you can rely on all the time.